The spotfin betta or Brunei beauty is a species of labyrinth fish endemic to the island of Borneo. It generally inhabits pools of very slow-moving water along rivers and streams in very shallow waters of 30 cm (12 in) or less. This species grows to a length of 6.7 cm (2.6 in) in the wild, and is occasionally found in the aquarium trade; in captivity this species regularly reaches 4 inches in length.
Betta pallifina is a species of gourami endemic to the island of Borneo.
Betta is a large genus of small, active, often colorful, freshwater ray-finned fishes, in the gourami family (Osphronemidae). The best known Betta species is B. splendens, commonly known as the Siamese fighting fish and often kept as an aquarium pet.
Betta albimarginata is a species of betta fish, endemic to the island of Borneo where it is only found in the Indonesian province of Kalimantan Timur. It inhabits the shallows of forest streams amongst vegetation and debris along the shores. This species grows to a length of 2.8 cm (1.1 in). It is a mouthbrooding species.
Betta mandor is a species of gourami endemic to the island of Borneo where it is only known from the Indonesian province of Kalimantan Barat where it is found in the Kapuas basin. It is an inhabitant of streams and pools in forested swamps, usually found in quite shallow waters. It feeds on insects and other small invertebrate prey. This species can reach a length of 5.7 centimetres (2.2 in) TL. This species can also be found in the aquarium trade.
Betta edithae is a species of gourami endemic to Indonesia where it occurs in Kalimantan, Sumatra and the Riau Archipelago. This species grows to a length of 8.2 cm (3.2 in), and can be found in the aquarium trade. The specific name honours the German aquarist Edith Korthaus (1923-1987), who co-discovered this species with her husband Walter Foersch. Walter is honoured in the specific name of another species they discovered, Betta foerschi.
Betta channoides is a species of betta endemic to the island of Borneo in Indonesia, where it is only found in the province of Kalimantan Timur. It is an inhabitant of the shallows of acidic brown-water forest streams. This species grows to a length of 5.0 cm (2.0 in).
The giant betta is a species of freshwater ray-finned fish in the subfamily Macropodusinae, part of the gourami family. It is endemic to South Kalimanatan, Katingan, and Sampit in Indonesian Borneo. It is found in a variety of freshwater habitats and is a paternal mouthbrooder. The species reaches 8.2 cm in standard length and is known to be a facultative air-breather.
Betta compuncta is a species of ray-finned fish in the family Osphronemidae. It reaches 6.2 cm in standard length.
Betta midas is a species of gourami in the genus Betta. It is native to Asia, specifically the island of Borneo, where it occurs in the Kapuas River basin in West Kalimantan in Indonesia, as well as western Sarawak in Malaysia. It is typically found in acidic blackwater rivers in remnant and intact peat swamp forests. The species reaches 6.6 cm in standard length and is known to be a facultative air-breather.
Betta pardalotos is a species of fish in the family Osphronemidae. It is native to Asia, where it occurs in the Musi River basin on the island of Sumatra in Indonesia. The species reaches 7.2 cm in standard length and is known to be a facultative air-breather. It feeds on insects and other small invertebrates such as zooplankton.
Betta taeniata is a species of gourami endemic to the Southeast Asian island of Borneo, where it lives in inland waters.
Sphaerichthys acrostoma, sometimes known as the giant chocolate gourami, is a species of gourami. It is native to Asia, where it is known only from the Kalimantan region of Borneo in Indonesia. The species reaches 4.6 cm in standard length, although some sources report a maximum standard length of 7 cm. It is known to be a facultative air-breather, and females of the species exhibit mouthbrooding.
Betta uberis is a species of gourami. It is native to Asia, where it occurs in peat swamp forests in West Kalimantan and Central Kalimantan on the island of Borneo in Indonesia. The species reaches 3.6 cm in standard length and is known to be a facultative air-breather. Its specific name, uberis, is derived from Latin and means "abundant", referring to the high number of rays present in the species' dorsal fin, which has between 14 and 17 rays, as opposed to the 10 to 12 rays present in related species such as Betta hendra.
Betta krataios is a species of gourami. It is native to Asia, where it occurs in the lower Kapuas River basin in West Kalimantan on the island of Borneo in Indonesia. The species reaches 4.5 cm in standard length and is known to be a facultative air-breather. Its specific name, krataios, is derived from Greek and means "strong", referring to the relatively robust build of the species.
Betta breviobesa is a species of gourami. It is native to Asia, where it occurs in the upper Kapuas River basin in West Kalimantan on the island of Borneo in Indonesia. The species reaches 6.5 centimetres (2.6 in) in standard length and is known to be a facultative air-breather. It was described in 1998 by Heok Hui Tan and Maurice Kottelat alongside the species Betta pinguis, which also occurs in the Kapuas basin.
Betta lehi is a species of gourami. It is native to Asia, where it occurs in the area southwest of Kuching in Sarawak in Malaysia, as well as the lower Kapuas River basin in West Kalimantan in Indonesia. It is typically found among vegetation in quiet streams in peat swamp forests and other acidic wetland environments. The species reaches 6.1 cm in standard length and is known to be a facultative air-breather.
Betta ideii is a species of gourami. It is a freshwater fish native to Asia, where it is known only from South Kalimantan on the island of Borneo in Indonesia. The species reaches 8.3 cm in standard length and is known to be a facultative air-breather. Its specific name, ideii, honors the fish collector Takashige Idei.
Betta ocellata, sometimes known as the eyespot mouthbrooder, is a species of gourami. It is native to Asia, where it occurs in north-eastern Borneo, specifically Sabah and East Kalimantan, in the countries of Malaysia and Indonesia respectively. It is typically found in slow-flowing areas such as ravines and isolated pools in the vicinity of floating leaves and submerged leaf litter. Individuals of the species are excellent jumpers, feeding primarily on terrestrial insects, although aquatic invertebrates are also consumed. The species reaches 8 cm in standard length and is known to be a facultative air-breather.
Betta patoti, sometimes known as the tiger betta or zebra betta, is a species of gourami. It is a freshwater fish native to Asia, where it occurs in the southern part of East Kalimantan on the island of Borneo in Indonesia. The species reaches 10.7 cm in total length and is known to be a facultative air-breather.
